package com.kt.emall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.kt.common.constant.ProductConstant;
import com.kt.emall.product.entity.AttrAttrgroupRelationEntity;
import com.kt.emall.product.entity.AttrGroupEntity;
import com.kt.emall.product.entity.CategoryEntity;
import com.kt.emall.product.service.AttrAttrgroupRelationService;
import com.kt.emall.product.service.AttrGroupService;
import com.kt.emall.product.service.CategoryService;
import com.kt.emall.product.vo.AttrGroupRelationVO;
import com.kt.emall.product.vo.AttrRespVO;
import com.kt.emall.product.vo.AttrVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.kt.common.utils.PageUtils;
import com.kt.common.utils.Query;

import com.kt.emall.product.dao.AttrDao;
import com.kt.emall.product.entity.AttrEntity;
import com.kt.emall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationService attrAttrgroupRelationService;

    @Autowired
    AttrGroupService attrGroupService;

    @Autowired
    CategoryService categoryService;


    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveAttrVo(AttrVO attrVO) {
        AttrEntity attrEntity = new AttrEntity();
//        attrEntity.setAttrName(attrVO.getAttrName());
        BeanUtils.copyProperties(attrVO, attrEntity);
        // 1、保存基本数据
        this.save(attrEntity);
        // 2、保存关联关系
        if (attrVO.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attrVO.getAttrGroupId() != null) {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attrVO.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());
            attrAttrgroupRelationService.save(relationEntity);
        }
    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type", "base".equalsIgnoreCase(type) ? ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() : ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        if (catelogId != 0) {
            queryWrapper.eq("catelog_id", catelogId);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            queryWrapper.and((wrapper) -> {
                wrapper.eq("attr_id", key).or().like("attr_name", key);
            });
        }
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );

        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrRespVO> respVOS = records.stream().map((attrEntity) -> {
            AttrRespVO attrRespVO = new AttrRespVO();
            BeanUtils.copyProperties(attrEntity, attrRespVO);

            // 1、设置分类和分组的名字
            if ("base".equalsIgnoreCase(type)) {
                AttrAttrgroupRelationEntity attrId = attrAttrgroupRelationService
                        .getOne(new QueryWrapper<AttrAttrgroupRelationEntity>()
                                .eq("attr_id", attrEntity.getAttrId()));
                if (attrId != null && attrId.getAttrGroupId() != null) {
                    AttrGroupEntity attrGroupEntity = attrGroupService.getById(attrId.getAttrGroupId());
                    attrRespVO.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }

            CategoryEntity categoryEntity = categoryService.getById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVO.setCatelogName(categoryEntity.getName());
            }
            return attrRespVO;
        }).collect(Collectors.toList());
        pageUtils.setList(respVOS);
        return pageUtils;
    }

    @Override
    public AttrRespVO getAttrInfo(Long attrId) {
        AttrRespVO respVO = new AttrRespVO();
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity, respVO);


        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            // 1、设置分组信息
            AttrAttrgroupRelationEntity attrGroupRelation = attrAttrgroupRelationService.getOne(new QueryWrapper<AttrAttrgroupRelationEntity>()
                    .eq("attr_id", attrId));
            if (attrGroupRelation != null) {
                respVO.setAttrGroupId(attrGroupRelation.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupService.getById(attrGroupRelation.getAttrGroupId());
                if (attrGroupEntity != null) {
                    respVO.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }

        // 2、设置分类信息
        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        respVO.setCatelogPath(catelogPath);
        CategoryEntity categoryEntity = categoryService.getById(catelogId);
        if (categoryEntity != null) {
            respVO.setCatelogName(categoryEntity.getName());
        }
        return respVO;
    }

    @Transactional(rollbackFor = {Exception.class})
    @Override
    public void updateAttr(AttrVO attrVO) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attrVO, attrEntity);
        this.updateById(attrEntity);


        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            // 1、修改分组关联
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attrVO.getAttrGroupId());
            relationEntity.setAttrId(attrVO.getAttrId());

            Integer count = attrAttrgroupRelationService.count(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrVO.getAttrId()));
            if (count > 0) {

                attrAttrgroupRelationService.update(relationEntity, new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrVO.getAttrId()));

            } else {
                attrAttrgroupRelationService.save(relationEntity);
            }
        }

    }

    /**
     * 根据分组id查找关联的所有基本属性
     *
     * @param attrgroupId
     * @return
     */
    @Override
    public List<AttrEntity> getAttrRelation(Long attrgroupId) {
        List<AttrAttrgroupRelationEntity> entities = attrAttrgroupRelationService
                .list(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));
        List<Long> attrIds = entities.stream().map((attr) -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());
        if (attrIds == null || attrIds.size() == 0) {
            return null;
        }
        List<AttrEntity> attrEntities = this.listByIds(attrIds);
        return attrEntities;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVO[] vos) {
//        attrAttrgroupRelationService.delete(new QueryWrapper<>().eq("attr_id", 1L).eq("attr_group_id", 1L));
        // 将vos转化为list
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map((item) -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, relationEntity);
            return relationEntity;
        }).collect(Collectors.toList());
        attrAttrgroupRelationService.removeByIds(entities);
    }

    /**
     * 获取当前分组没有关联的所有属性
     *
     * @param params
     * @param attrgroupId
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        // 1、当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupService.getById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        // 2、当前分组只能关联别的分组没有引用的属性
        // 2.1）、当前分类下的其他分组
        List<AttrGroupEntity> group = attrGroupService.list(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> collect = group.stream().map((item) -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());

        // 2.2）、这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = attrAttrgroupRelationService.list(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        List<Long> attrIds = groupId.stream().map((item) -> {
            return item.getAttrId();
        }).collect(Collectors.toList());

        // 2.3）、从当前分类的所有属性中移除这些属性
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type", ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if (attrIds != null && attrIds.size() > 0) {
            wrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((w) -> {
                w.eq("attr_id", key).or().like("attr_name", key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);
        PageUtils pageUtils = new PageUtils(page);
        return pageUtils;
    }

    @Override
    public List<Long> selectSearchAttrIds(List<Long> attrIds) {
        return baseMapper.selectSearchAttrIds(attrIds);
    }

}
